This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An organic compound always contains A) Oxygen. B) Carbon. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: B) Carbon. 2. Common nutrients include A) Nitrogen and oxygen. B) Sodium and Nitrate. C) Lead and Cadmium. D) Hydrocarbons. Show Answer Correct Answer: A) Nitrogen and oxygen. 3. What are the activities included in the session on acid-base indicators? A) Watching a video on the preparation of natural acid-base indicators from plants. B) Discussing the role of nitrifying bacteria in the reaction of nitrogen-based fertilizers. C) Brainstorming on the causes of air pollution. D) Listing chemical industries in Ethiopia. Show Answer Correct Answer: A) Watching a video on the preparation of natural acid-base indicators from plants. 4. What is water hardness? A) The amount of dissolved calcium and degassing. B) The amount of dissolved ammonia and nitrites. C) The amount of dissolved oxygen and potassium. D) The amount of dissolved calcium and magnesium. Show Answer Correct Answer: D) The amount of dissolved calcium and magnesium. 5. What is the standard electrode potential for H$_{2}$(g)? A) 0. B) +1. C) -1. D) -2. Show Answer Correct Answer: A) 0. 6. What is the unit of measurement for bond energy? A) Calories per gram. B) Joules per mole. C) Kilojoules per mole. D) Watts per second. Show Answer Correct Answer: B) Joules per mole. 7. The mole fraction of nitrogen in the air is 0.78. What is the mole fraction of nitrogen in water? A) 9.12 x 10$^{-6}$. B) 4.91 x 10$^{-6}$. C) 2.46 x 10$^{-6}$. D) 1.85 x 10$^{-5}$. Show Answer Correct Answer: A) 9.12 x 10$^{-6}$. 8. How do pesticides affect non-target species in ecosystems? A) Pesticides have no effect on non-target species in ecosystems. B) Pesticides only benefit target species without harming others. C) Pesticides enhance the growth of non-target species in ecosystems. D) Pesticides negatively impact non-target species by causing toxicity and disrupting ecological balance. Show Answer Correct Answer: D) Pesticides negatively impact non-target species by causing toxicity and disrupting ecological balance. 9. Active transport in plants involves: A) Water moving across membranes without energy. B) Plants using energy to move nutrients from the soil into their roots against a concentration gradient. C) Passive diffusion of molecules from high to low concentration. D) Conversion of nitrogen gas into usable compounds. Show Answer Correct Answer: B) Plants using energy to move nutrients from the soil into their roots against a concentration gradient. 10. Which of the following disciplines studies the chemistry of the earth's atmosphere? A) Earth chemistry. B) Global warming chemistry chemistry. C) Atmospheric chemistry. D) Acid rain. Show Answer Correct Answer: C) Atmospheric chemistry. 11. *Sewage is: A) *dissolved and undissolved materials coming from your home. B) *treated water released back into the river or lake. C) *underground tank used for decomposing waste material. D) *large pipes for handling excessive street water after rain. Show Answer Correct Answer: A) *dissolved and undissolved materials coming from your home. 12. Micronutrients are defined as: A) Elements needed in very small amounts by organisms; both deficiency and excess can be harmful. B) Elements and compounds needed in large amounts for growth and development. C) Compounds with pH greater than 7 that feel slippery. D) Substances that passively move from high to low concentration. Show Answer Correct Answer: A) Elements needed in very small amounts by organisms; both deficiency and excess can be harmful. 13. How much UV radiation does the ozone layer normally filter out? A) 99%. B) 10%. C) 50%. D) 0%. Show Answer Correct Answer: A) 99%. 14. During which process does an atom, molecule, or ion lose one or more electrons? A) Transmutation. B) Oxidation. C) Reduction. D) Neutralization. Show Answer Correct Answer: B) Oxidation. 15. In which direction does electricity flow in a galvanic cell (battery)? A) Electrons flow from the cathode to the anode. B) Electrons flow from left to right. C) Electrons flow from anode to cathode. D) Electrons flow from right to left. Show Answer Correct Answer: C) Electrons flow from anode to cathode. 16. What is the main cause of soil/land pollution related to waste disposal? A) Deforestation. B) Agriculture. C) Industrial waste. D) Dumping non-biodegradable wastes. Show Answer Correct Answer: D) Dumping non-biodegradable wastes. 17. Which of the following is a common method used to reduce air pollution from industrial sources? A) Electrostatic precipitators. B) Biomagnification. C) Photolysis. D) Biodegradation. Show Answer Correct Answer: A) Electrostatic precipitators. 18. An abundance of which of the following would indicate that water is polluted? A) Trout and other game fish. B) Sludge worms and leeches. C) Salamanders and turtles. D) Variety of insect larvae. Show Answer Correct Answer: B) Sludge worms and leeches. 19. Methane is a gas that impacts climate change and is called a ..... A) Glasshouse gas. B) Greenhouse gas. C) Hothouse gas. D) None of the above. Show Answer Correct Answer: B) Greenhouse gas. 20. What are organic nutrients? A) Nutrients derived from living organisms. B) Nutrients that are synthetic. C) Nutrients that are inorganic. D) Nutrients that are artificial. Show Answer Correct Answer: A) Nutrients derived from living organisms. 21. High biodiversity is a sign of a healthy ecosystem. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. HNO$_{3}$ is an example of a(n) A) Acid. B) Base. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Acid. 23. The presence of ammonia in the atmosphere can: A) Neutralize acids partially. B) Increase acidity. C) All the above. D) None of the above. Show Answer Correct Answer: A) Neutralize acids partially. 24. What is the main environmental concern associated with the use of chlorofluorocarbons (CFCs)? A) Global warming. B) Ozone layer depletion. C) Acid rain. D) Water pollution. Show Answer Correct Answer: B) Ozone layer depletion. 25. Natural neutralizing agent of acid rain in soils: A) CaCO3. B) NaCl. C) Fe2O3. D) SiO2. Show Answer Correct Answer: A) CaCO3. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 1Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 2Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 3Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 4Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 5Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 6Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 7Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 8Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 9Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books